Question

17.4*26+34.8*86简便运算？

Answer 1

=17.4*（26+2*86）乘法分配律来简便计算
=17.4*98
=17.4*（100-2）二次应用乘法分配律
=17.4*100-17.4*2
=1740-34.8
=1705.2

Answer 2

17.4*26+34.8*86
=34.8*13+34.8*86
=(13*86)*34.8
=38906.4
这道题这样计算就是他的简便方法了

Answer 3

简便运算是直接提取公约34.8
17.4x26+34.8x86
=17.4x2x13+34.8x86
=34.8x(13+86)
=34.8x99
=34.8x(100-1)
=34.8x100-34.8
=3480-34.8
=3445.2

Answer 4

17.4x26+34.8x86
=34.8x13+34.8x86
=34.8x（13x86）
=34.8x（100-1）
=34.8x100-34.8x1
=3480-34.8
=3435.2
希望能帮到你！

Answer 5

17.4*26+34.8*86简便运算
=17.4×26+17.4×2×86
=17.4×(26+172)
=17.4×198
=17.4×(200-2)
=17.4×200-17.4×2
=3445.2